Changeset e9caf47 in mainline for uspace/srv/net/il/arp/arp.c
- Timestamp:
- 2010-10-27T23:06:48Z (14 years ago)
- Branches:
- lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export
- Children:
- e8199d77
- Parents:
- 0a3fbc7
- File:
-
- 1 edited
Legend:
- Unmodified
- Added
- Removed
-
uspace/srv/net/il/arp/arp.c
r0a3fbc7 re9caf47 28 28 29 29 /** @addtogroup arp 30 * 30 * @{ 31 31 */ 32 32 33 33 /** @file 34 * ARP module implementation. 35 * @see arp.h 36 */ 34 * ARP module implementation. 35 * @see arp.h 36 */ 37 38 #include "arp.h" 39 #include "arp_header.h" 40 #include "arp_oc.h" 41 #include "arp_module.h" 37 42 38 43 #include <async.h> … … 43 48 #include <str.h> 44 49 #include <task.h> 50 #include <adt/measured_strings.h> 45 51 #include <ipc/ipc.h> 46 52 #include <ipc/services.h> … … 53 59 #include <net/modules.h> 54 60 #include <net/device.h> 55 #include <arp_interface.h> 61 #include <net/packet.h> 62 56 63 #include <nil_interface.h> 57 64 #include <protocol_map.h> 58 #include <adt/measured_strings.h>59 #include <net/packet.h>60 65 #include <packet_client.h> 61 66 #include <packet_remote.h> … … 63 68 #include <il_local.h> 64 69 65 #include "arp.h" 66 #include "arp_header.h" 67 #include "arp_oc.h" 68 #include "arp_module.h" 69 70 71 /** ARP module name. 72 */ 70 71 /** ARP module name. */ 73 72 #define NAME "arp" 74 73 75 /** ARP global data. 76 */ 77 arp_globals_t arp_globals; 74 /** ARP global data. */ 75 arp_globals_t arp_globals; 76 77 DEVICE_MAP_IMPLEMENT(arp_cache, arp_device_t); 78 INT_MAP_IMPLEMENT(arp_protos, arp_proto_t); 79 GENERIC_CHAR_MAP_IMPLEMENT(arp_addr, measured_string_t); 78 80 79 81 /** Clears the device specific data. 80 * @param[in] device The device specific data. 81 */ 82 void arp_clear_device(arp_device_ref device); 83 84 /** Creates new protocol specific data. 85 * Allocates and returns the needed memory block as the proto parameter. 86 * @param[out] proto The allocated protocol specific data. 87 * @param[in] service The protocol module service. 88 * @param[in] address The actual protocol device address. 89 * @returns EOK on success. 90 * @returns ENOMEM if there is not enough memory left. 91 */ 92 int arp_proto_create(arp_proto_ref * proto, services_t service, measured_string_ref address); 93 94 /** @name Message processing functions 95 */ 96 /*@{*/ 97 98 /** Registers the device. 99 * Creates new device entry in the cache or updates the protocol address if the device with the device identifier and the driver service exists. 100 * @param[in] device_id The device identifier. 101 * @param[in] service The device driver service. 102 * @param[in] protocol The protocol service. 103 * @param[in] address The actual device protocol address. 104 * @returns EOK on success. 105 * @returns EEXIST if another device with the same device identifier and different driver service exists. 106 * @returns ENOMEM if there is not enough memory left. 107 * @returns Other error codes as defined for the measured_strings_return() function. 108 */ 109 int arp_device_message(device_id_t device_id, services_t service, services_t protocol, measured_string_ref address); 110 111 /** Updates the device content length according to the new MTU value. 112 * @param[in] device_id The device identifier. 113 * @param[in] mtu The new mtu value. 114 * @returns ENOENT if device is not found. 115 * @returns EOK on success. 116 */ 117 int arp_mtu_changed_message(device_id_t device_id, size_t mtu); 118 119 /** Processes the received ARP packet. 120 * Updates the source hardware address if the source entry exists or the packet is targeted to my protocol address. 121 * Responses to the ARP request if the packet is the ARP request and is targeted to my address. 122 * @param[in] device_id The source device identifier. 123 * @param[in,out] packet The received packet. 124 * @returns EOK on success and the packet is no longer needed. 125 * @returns 1 on success and the packet has been reused. 126 * @returns EINVAL if the packet is too small to carry an ARP packet. 127 * @returns EINVAL if the received address lengths differs from the registered values. 128 * @returns ENOENT if the device is not found in the cache. 129 * @returns ENOENT if the protocol for the device is not found in the cache. 130 * @returns ENOMEM if there is not enough memory left. 131 */ 132 int arp_receive_message(device_id_t device_id, packet_t packet); 133 134 /** Returns the hardware address for the given protocol address. 135 * Sends the ARP request packet if the hardware address is not found in the cache. 136 * @param[in] device_id The device identifier. 137 * @param[in] protocol The protocol service. 138 * @param[in] target The target protocol address. 139 * @returns The hardware address of the target. 140 * @returns NULL if the target parameter is NULL. 141 * @returns NULL if the device is not found. 142 * @returns NULL if the device packet is too small to send a request. 143 * @returns NULL if the hardware address is not found in the cache. 144 */ 145 measured_string_ref arp_translate_message(device_id_t device_id, services_t protocol, measured_string_ref target); 146 147 /*@}*/ 148 149 DEVICE_MAP_IMPLEMENT(arp_cache, arp_device_t) 150 151 INT_MAP_IMPLEMENT(arp_protos, arp_proto_t) 152 153 GENERIC_CHAR_MAP_IMPLEMENT(arp_addr, measured_string_t) 154 155 int arp_clean_cache_req(int arp_phone){ 82 * 83 * @param[in] device The device specific data. 84 */ 85 static void arp_clear_device(arp_device_ref device) 86 { 87 int count; 88 arp_proto_ref proto; 89 90 for (count = arp_protos_count(&device->protos) - 1; count >= 0; 91 count--) { 92 proto = arp_protos_get_index(&device->protos, count); 93 if (proto) { 94 if (proto->addr) 95 free(proto->addr); 96 if (proto->addr_data) 97 free(proto->addr_data); 98 arp_addr_destroy(&proto->addresses); 99 } 100 } 101 arp_protos_clear(&device->protos); 102 } 103 104 static int arp_clean_cache_req(int arp_phone) 105 { 156 106 int count; 157 107 arp_device_ref device; 158 108 159 109 fibril_rwlock_write_lock(&arp_globals.lock); 160 for(count = arp_cache_count(&arp_globals.cache) - 1; count >= 0; -- count){ 110 for (count = arp_cache_count(&arp_globals.cache) - 1; count >= 0; 111 count--) { 161 112 device = arp_cache_get_index(&arp_globals.cache, count); 162 if (device){113 if (device) { 163 114 arp_clear_device(device); 164 if (device->addr_data){115 if (device->addr_data) 165 116 free(device->addr_data); 166 } 167 if(device->broadcast_data){ 117 if (device->broadcast_data) 168 118 free(device->broadcast_data); 169 }170 119 } 171 120 } … … 176 125 } 177 126 178 int arp_clear_address_req(int arp_phone, device_id_t device_id, services_t protocol, measured_string_ref address){ 127 static int 128 arp_clear_address_req(int arp_phone, device_id_t device_id, services_t protocol, 129 measured_string_ref address) 130 { 179 131 arp_device_ref device; 180 132 arp_proto_ref proto; … … 182 134 fibril_rwlock_write_lock(&arp_globals.lock); 183 135 device = arp_cache_find(&arp_globals.cache, device_id); 184 if (! device){136 if (!device) { 185 137 fibril_rwlock_write_unlock(&arp_globals.lock); 186 138 return ENOENT; 187 139 } 188 140 proto = arp_protos_find(&device->protos, protocol); 189 if (! proto){141 if (!proto) { 190 142 fibril_rwlock_write_unlock(&arp_globals.lock); 191 143 return ENOENT; … … 196 148 } 197 149 198 void arp_clear_device(arp_device_ref device){ 199 int count; 200 arp_proto_ref proto; 201 202 for(count = arp_protos_count(&device->protos) - 1; count >= 0; -- count){ 203 proto = arp_protos_get_index(&device->protos, count); 204 if(proto){ 205 if(proto->addr){ 206 free(proto->addr); 207 } 208 if(proto->addr_data){ 209 free(proto->addr_data); 210 } 211 arp_addr_destroy(&proto->addresses); 212 } 213 } 214 arp_protos_clear(&device->protos); 215 } 216 217 int arp_clear_device_req(int arp_phone, device_id_t device_id){ 150 151 static int arp_clear_device_req(int arp_phone, device_id_t device_id) 152 { 218 153 arp_device_ref device; 219 154 220 155 fibril_rwlock_write_lock(&arp_globals.lock); 221 156 device = arp_cache_find(&arp_globals.cache, device_id); 222 if (! device){157 if (!device) { 223 158 fibril_rwlock_write_unlock(&arp_globals.lock); 224 159 return ENOENT; … … 230 165 } 231 166 232 int arp_device_message(device_id_t device_id, services_t service, services_t protocol, measured_string_ref address){ 167 /** Creates new protocol specific data. 168 * 169 * Allocates and returns the needed memory block as the proto parameter. 170 * 171 * @param[out] proto The allocated protocol specific data. 172 * @param[in] service The protocol module service. 173 * @param[in] address The actual protocol device address. 174 * @returns EOK on success. 175 * @returns ENOMEM if there is not enough memory left. 176 */ 177 static int 178 arp_proto_create(arp_proto_ref *proto, services_t service, 179 measured_string_ref address) 180 { 181 ERROR_DECLARE; 182 183 *proto = (arp_proto_ref) malloc(sizeof(arp_proto_t)); 184 if (!*proto) 185 return ENOMEM; 186 (*proto)->service = service; 187 (*proto)->addr = address; 188 (*proto)->addr_data = address->value; 189 if (ERROR_OCCURRED(arp_addr_initialize(&(*proto)->addresses))) { 190 free(*proto); 191 return ERROR_CODE; 192 } 193 return EOK; 194 } 195 196 /** Registers the device. 197 * 198 * Creates new device entry in the cache or updates the protocol address if the 199 * device with the device identifier and the driver service exists. 200 * 201 * @param[in] device_id The device identifier. 202 * @param[in] service The device driver service. 203 * @param[in] protocol The protocol service. 204 * @param[in] address The actual device protocol address. 205 * @returns EOK on success. 206 * @returns EEXIST if another device with the same device identifier 207 * and different driver service exists. 208 * @returns ENOMEM if there is not enough memory left. 209 * @returns Other error codes as defined for the 210 * measured_strings_return() function. 211 */ 212 static int 213 arp_device_message(device_id_t device_id, services_t service, 214 services_t protocol, measured_string_ref address) 215 { 233 216 ERROR_DECLARE; 234 217 … … 241 224 // an existing device? 242 225 device = arp_cache_find(&arp_globals.cache, device_id); 243 if (device){244 if (device->service != service){226 if (device) { 227 if (device->service != service) { 245 228 printf("Device %d already exists\n", device->device_id); 246 229 fibril_rwlock_write_unlock(&arp_globals.lock); … … 248 231 } 249 232 proto = arp_protos_find(&device->protos, protocol); 250 if (proto){233 if (proto) { 251 234 free(proto->addr); 252 235 free(proto->addr_data); 253 236 proto->addr = address; 254 237 proto->addr_data = address->value; 255 }else{ 256 if(ERROR_OCCURRED(arp_proto_create(&proto, protocol, address))){ 238 } else { 239 if (ERROR_OCCURRED(arp_proto_create(&proto, protocol, 240 address))) { 257 241 fibril_rwlock_write_unlock(&arp_globals.lock); 258 242 return ERROR_CODE; 259 243 } 260 index = arp_protos_add(&device->protos, proto->service, proto); 261 if(index < 0){ 244 index = arp_protos_add(&device->protos, proto->service, 245 proto); 246 if (index < 0) { 262 247 fibril_rwlock_write_unlock(&arp_globals.lock); 263 248 free(proto); 264 249 return index; 265 250 } 266 printf("New protocol added:\n\tdevice id\t= %d\n\tproto\t= %d", device_id, protocol); 267 } 268 }else{ 251 printf("New protocol added:\n\tdevice id\t= " 252 "%d\n\tproto\t= %d", device_id, protocol); 253 } 254 } else { 269 255 hardware = hardware_map(service); 270 if (! hardware){256 if (!hardware) 271 257 return ENOENT; 272 }258 273 259 // create a new device 274 260 device = (arp_device_ref) malloc(sizeof(arp_device_t)); 275 if (! device){261 if (!device) { 276 262 fibril_rwlock_write_unlock(&arp_globals.lock); 277 263 return ENOMEM; … … 279 265 device->hardware = hardware; 280 266 device->device_id = device_id; 281 if(ERROR_OCCURRED(arp_protos_initialize(&device->protos)) 282 || ERROR_OCCURRED(arp_proto_create(&proto, protocol, address))){ 267 if (ERROR_OCCURRED(arp_protos_initialize(&device->protos)) || 268 ERROR_OCCURRED(arp_proto_create(&proto, protocol, 269 address))) { 283 270 fibril_rwlock_write_unlock(&arp_globals.lock); 284 271 free(device); … … 286 273 } 287 274 index = arp_protos_add(&device->protos, proto->service, proto); 288 if (index < 0){275 if (index < 0) { 289 276 fibril_rwlock_write_unlock(&arp_globals.lock); 290 277 arp_protos_destroy(&device->protos); … … 293 280 } 294 281 device->service = service; 282 295 283 // bind the new one 296 device->phone = nil_bind_service(device->service, (ipcarg_t) device->device_id, SERVICE_ARP, arp_globals.client_connection); 297 if(device->phone < 0){ 284 device->phone = nil_bind_service(device->service, 285 (ipcarg_t) device->device_id, SERVICE_ARP, 286 arp_globals.client_connection); 287 if (device->phone < 0) { 298 288 fibril_rwlock_write_unlock(&arp_globals.lock); 299 289 arp_protos_destroy(&device->protos); … … 301 291 return EREFUSED; 302 292 } 293 303 294 // get packet dimensions 304 if(ERROR_OCCURRED(nil_packet_size_req(device->phone, device_id, &device->packet_dimension))){ 295 if (ERROR_OCCURRED(nil_packet_size_req(device->phone, device_id, 296 &device->packet_dimension))) { 305 297 fibril_rwlock_write_unlock(&arp_globals.lock); 306 298 arp_protos_destroy(&device->protos); … … 308 300 return ERROR_CODE; 309 301 } 302 310 303 // get hardware address 311 if(ERROR_OCCURRED(nil_get_addr_req(device->phone, device_id, &device->addr, &device->addr_data))){ 304 if (ERROR_OCCURRED(nil_get_addr_req(device->phone, device_id, 305 &device->addr, &device->addr_data))) { 312 306 fibril_rwlock_write_unlock(&arp_globals.lock); 313 307 arp_protos_destroy(&device->protos); … … 315 309 return ERROR_CODE; 316 310 } 311 317 312 // get broadcast address 318 if(ERROR_OCCURRED(nil_get_broadcast_addr_req(device->phone, device_id, &device->broadcast_addr, &device->broadcast_data))){ 313 if (ERROR_OCCURRED(nil_get_broadcast_addr_req(device->phone, 314 device_id, &device->broadcast_addr, 315 &device->broadcast_data))) { 319 316 fibril_rwlock_write_unlock(&arp_globals.lock); 320 317 free(device->addr); … … 324 321 return ERROR_CODE; 325 322 } 326 if(ERROR_OCCURRED(arp_cache_add(&arp_globals.cache, device->device_id, device))){ 323 324 if (ERROR_OCCURRED(arp_cache_add(&arp_globals.cache, 325 device->device_id, device))) { 327 326 fibril_rwlock_write_unlock(&arp_globals.lock); 328 327 free(device->addr); … … 334 333 return ERROR_CODE; 335 334 } 336 printf("%s: Device registered (id: %d, type: 0x%x, service: %d, proto: %d)\n", 337 NAME, device->device_id, device->hardware, device->service, protocol); 335 printf("%s: Device registered (id: %d, type: 0x%x, service: %d," 336 " proto: %d)\n", NAME, device->device_id, device->hardware, 337 device->service, protocol); 338 338 } 339 339 fibril_rwlock_write_unlock(&arp_globals.lock); 340 return EOK; 341 } 342 343 int arp_device_req(int arp_phone, device_id_t device_id, services_t protocol, services_t netif, measured_string_ref address){ 344 ERROR_DECLARE; 345 346 measured_string_ref tmp; 347 348 // copy the given address for exclusive use 349 tmp = measured_string_copy(address); 350 if(ERROR_OCCURRED(arp_device_message(device_id, netif, protocol, tmp))){ 351 free(tmp->value); 352 free(tmp); 353 } 354 return ERROR_CODE; 355 } 356 357 int arp_initialize(async_client_conn_t client_connection){ 340 341 return EOK; 342 } 343 344 /** Initializes the ARP module. 345 * 346 * @param[in] client_connection The client connection processing function. 347 * The module skeleton propagates its own one. 348 * @returns EOK on success. 349 * @returns ENOMEM if there is not enough memory left. 350 */ 351 int arp_initialize(async_client_conn_t client_connection) 352 { 358 353 ERROR_DECLARE; 359 354 … … 366 361 } 367 362 368 int arp_message_standalone(ipc_callid_t callid, ipc_call_t *call, 369 ipc_call_t *answer, int *answer_count) 370 { 371 ERROR_DECLARE; 372 373 measured_string_ref address; 374 measured_string_ref translation; 375 char * data; 376 packet_t packet; 377 packet_t next; 378 379 *answer_count = 0; 380 switch (IPC_GET_METHOD(*call)) { 381 case IPC_M_PHONE_HUNGUP: 382 return EOK; 383 case NET_ARP_DEVICE: 384 ERROR_PROPAGATE(measured_strings_receive(&address, &data, 1)); 385 if(ERROR_OCCURRED(arp_device_message(IPC_GET_DEVICE(call), IPC_GET_SERVICE(call), ARP_GET_NETIF(call), address))){ 386 free(address); 387 free(data); 388 } 389 return ERROR_CODE; 390 case NET_ARP_TRANSLATE: 391 ERROR_PROPAGATE(measured_strings_receive(&address, &data, 1)); 392 fibril_rwlock_read_lock(&arp_globals.lock); 393 translation = arp_translate_message(IPC_GET_DEVICE(call), IPC_GET_SERVICE(call), address); 394 free(address); 395 free(data); 396 if(! translation){ 397 fibril_rwlock_read_unlock(&arp_globals.lock); 398 return ENOENT; 399 } 400 ERROR_CODE = measured_strings_reply(translation, 1); 401 fibril_rwlock_read_unlock(&arp_globals.lock); 402 return ERROR_CODE; 403 case NET_ARP_CLEAR_DEVICE: 404 return arp_clear_device_req(0, IPC_GET_DEVICE(call)); 405 case NET_ARP_CLEAR_ADDRESS: 406 ERROR_PROPAGATE(measured_strings_receive(&address, &data, 1)); 407 arp_clear_address_req(0, IPC_GET_DEVICE(call), IPC_GET_SERVICE(call), address); 408 free(address); 409 free(data); 410 return EOK; 411 case NET_ARP_CLEAN_CACHE: 412 return arp_clean_cache_req(0); 413 case NET_IL_DEVICE_STATE: 414 // do nothing - keep the cache 415 return EOK; 416 case NET_IL_RECEIVED: 417 if(! ERROR_OCCURRED(packet_translate_remote(arp_globals.net_phone, &packet, IPC_GET_PACKET(call)))){ 418 fibril_rwlock_read_lock(&arp_globals.lock); 419 do{ 420 next = pq_detach(packet); 421 ERROR_CODE = arp_receive_message(IPC_GET_DEVICE(call), packet); 422 if(ERROR_CODE != 1){ 423 pq_release_remote(arp_globals.net_phone, packet_get_id(packet)); 424 } 425 packet = next; 426 }while(packet); 427 fibril_rwlock_read_unlock(&arp_globals.lock); 428 } 429 return ERROR_CODE; 430 case NET_IL_MTU_CHANGED: 431 return arp_mtu_changed_message(IPC_GET_DEVICE(call), IPC_GET_MTU(call)); 432 } 433 434 return ENOTSUP; 435 } 436 437 int arp_mtu_changed_message(device_id_t device_id, size_t mtu){ 363 /** Updates the device content length according to the new MTU value. 364 * 365 * @param[in] device_id The device identifier. 366 * @param[in] mtu The new mtu value. 367 * @returns ENOENT if device is not found. 368 * @returns EOK on success. 369 */ 370 static int arp_mtu_changed_message(device_id_t device_id, size_t mtu) 371 { 438 372 arp_device_ref device; 439 373 440 374 fibril_rwlock_write_lock(&arp_globals.lock); 441 375 device = arp_cache_find(&arp_globals.cache, device_id); 442 if (! device){376 if (!device) { 443 377 fibril_rwlock_write_unlock(&arp_globals.lock); 444 378 return ENOENT; 445 379 } 446 380 device->packet_dimension.content = mtu; 381 fibril_rwlock_write_unlock(&arp_globals.lock); 447 382 printf("arp - device %d changed mtu to %d\n\n", device_id, mtu); 448 fibril_rwlock_write_unlock(&arp_globals.lock); 449 return EOK; 450 } 451 452 int arp_proto_create(arp_proto_ref * proto, services_t service, measured_string_ref address){ 453 ERROR_DECLARE; 454 455 *proto = (arp_proto_ref) malloc(sizeof(arp_proto_t)); 456 if(!(*proto)){ 457 return ENOMEM; 458 } 459 (** proto).service = service; 460 (** proto).addr = address; 461 (** proto).addr_data = address->value; 462 if(ERROR_OCCURRED(arp_addr_initialize(&(** proto).addresses))){ 463 free(*proto); 464 return ERROR_CODE; 465 } 466 return EOK; 467 } 468 469 int arp_receive_message(device_id_t device_id, packet_t packet){ 383 return EOK; 384 } 385 386 /** Processes the received ARP packet. 387 * 388 * Updates the source hardware address if the source entry exists or the packet 389 * is targeted to my protocol address. 390 * Responses to the ARP request if the packet is the ARP request and is 391 * targeted to my address. 392 * 393 * @param[in] device_id The source device identifier. 394 * @param[in,out] packet The received packet. 395 * @returns EOK on success and the packet is no longer needed. 396 * @returns One on success and the packet has been reused. 397 * @returns EINVAL if the packet is too small to carry an ARP 398 * packet. 399 * @returns EINVAL if the received address lengths differs from 400 * the registered values. 401 * @returns ENOENT if the device is not found in the cache. 402 * @returns ENOENT if the protocol for the device is not found in 403 * the cache. 404 * @returns ENOMEM if there is not enough memory left. 405 */ 406 static int arp_receive_message(device_id_t device_id, packet_t packet) 407 { 470 408 ERROR_DECLARE; 471 409 … … 475 413 arp_proto_ref proto; 476 414 measured_string_ref hw_source; 477 uint8_t * 478 uint8_t * 479 uint8_t * 480 uint8_t * 415 uint8_t *src_hw; 416 uint8_t *src_proto; 417 uint8_t *des_hw; 418 uint8_t *des_proto; 481 419 482 420 length = packet_get_data_length(packet); 483 if (length <= sizeof(arp_header_t)){421 if (length <= sizeof(arp_header_t)) 484 422 return EINVAL; 485 } 423 486 424 device = arp_cache_find(&arp_globals.cache, device_id); 487 if (! device){425 if (!device) 488 426 return ENOENT; 489 } 427 490 428 header = (arp_header_ref) packet_get_data(packet); 491 if((ntohs(header->hardware) != device->hardware) 492 || (length < sizeof(arp_header_t) + header->hardware_length * 2u + header->protocol_length * 2u)){ 429 if ((ntohs(header->hardware) != device->hardware) || 430 (length < sizeof(arp_header_t) + header->hardware_length * 2U + 431 header->protocol_length * 2U)) { 493 432 return EINVAL; 494 433 } 495 proto = arp_protos_find(&device->protos, protocol_unmap(device->service, ntohs(header->protocol))); 496 if(! proto){ 434 435 proto = arp_protos_find(&device->protos, 436 protocol_unmap(device->service, ntohs(header->protocol))); 437 if (!proto) 497 438 return ENOENT; 498 } 439 499 440 src_hw = ((uint8_t *) header) + sizeof(arp_header_t); 500 441 src_proto = src_hw + header->hardware_length; 501 442 des_hw = src_proto + header->protocol_length; 502 443 des_proto = des_hw + header->hardware_length; 503 hw_source = arp_addr_find(&proto->addresses, (char *) src_proto, CONVERT_SIZE(uint8_t, char, header->protocol_length)); 444 hw_source = arp_addr_find(&proto->addresses, (char *) src_proto, 445 CONVERT_SIZE(uint8_t, char, header->protocol_length)); 504 446 // exists? 505 if(hw_source){ 506 if(hw_source->length != CONVERT_SIZE(uint8_t, char, header->hardware_length)){ 447 if (hw_source) { 448 if (hw_source->length != CONVERT_SIZE(uint8_t, char, 449 header->hardware_length)) { 507 450 return EINVAL; 508 451 } … … 510 453 } 511 454 // is my protocol address? 512 if(proto->addr->length != CONVERT_SIZE(uint8_t, char, header->protocol_length)){ 455 if (proto->addr->length != CONVERT_SIZE(uint8_t, char, 456 header->protocol_length)) { 513 457 return EINVAL; 514 458 } 515 if(! str_lcmp(proto->addr->value, (char *) des_proto, proto->addr->length)){ 459 if (!str_lcmp(proto->addr->value, (char *) des_proto, 460 proto->addr->length)) { 516 461 // not already upadted? 517 if(! hw_source){ 518 hw_source = measured_string_create_bulk((char *) src_hw, CONVERT_SIZE(uint8_t, char, header->hardware_length)); 519 if(! hw_source){ 462 if (!hw_source) { 463 hw_source = measured_string_create_bulk((char *) src_hw, 464 CONVERT_SIZE(uint8_t, char, 465 header->hardware_length)); 466 if (!hw_source) 520 467 return ENOMEM; 521 } 522 ERROR_PROPAGATE(arp_addr_add(&proto->addresses, (char *) src_proto, CONVERT_SIZE(uint8_t, char, header->protocol_length), hw_source)); 523 } 524 if(ntohs(header->operation) == ARPOP_REQUEST){ 468 469 ERROR_PROPAGATE(arp_addr_add(&proto->addresses, 470 (char *) src_proto, CONVERT_SIZE(uint8_t, char, 471 header->protocol_length), hw_source)); 472 } 473 if (ntohs(header->operation) == ARPOP_REQUEST) { 525 474 header->operation = htons(ARPOP_REPLY); 526 475 memcpy(des_proto, src_proto, header->protocol_length); 527 memcpy(src_proto, proto->addr->value, header->protocol_length); 528 memcpy(src_hw, device->addr->value, device->packet_dimension.addr_len); 529 memcpy(des_hw, hw_source->value, header->hardware_length); 530 ERROR_PROPAGATE(packet_set_addr(packet, src_hw, des_hw, header->hardware_length)); 531 nil_send_msg(device->phone, device_id, packet, SERVICE_ARP); 476 memcpy(src_proto, proto->addr->value, 477 header->protocol_length); 478 memcpy(src_hw, device->addr->value, 479 device->packet_dimension.addr_len); 480 memcpy(des_hw, hw_source->value, 481 header->hardware_length); 482 ERROR_PROPAGATE(packet_set_addr(packet, src_hw, des_hw, 483 header->hardware_length)); 484 nil_send_msg(device->phone, device_id, packet, 485 SERVICE_ARP); 532 486 return 1; 533 487 } 534 488 } 535 return EOK; 536 } 537 538 measured_string_ref arp_translate_message(device_id_t device_id, services_t protocol, measured_string_ref target){ 489 490 return EOK; 491 } 492 493 494 /** Returns the hardware address for the given protocol address. 495 * 496 * Sends the ARP request packet if the hardware address is not found in the 497 * cache. 498 * 499 * @param[in] device_id The device identifier. 500 * @param[in] protocol The protocol service. 501 * @param[in] target The target protocol address. 502 * @returns The hardware address of the target. 503 * @returns NULL if the target parameter is NULL. 504 * @returns NULL if the device is not found. 505 * @returns NULL if the device packet is too small to send a 506 * request. 507 * @returns NULL if the hardware address is not found in the cache. 508 */ 509 static measured_string_ref 510 arp_translate_message(device_id_t device_id, services_t protocol, 511 measured_string_ref target) 512 { 539 513 arp_device_ref device; 540 514 arp_proto_ref proto; … … 544 518 arp_header_ref header; 545 519 546 if (! target){520 if (!target) 547 521 return NULL; 548 } 522 549 523 device = arp_cache_find(&arp_globals.cache, device_id); 550 if (! device){524 if (!device) 551 525 return NULL; 552 } 526 553 527 proto = arp_protos_find(&device->protos, protocol); 554 if ((! proto) || (proto->addr->length != target->length)){528 if (!proto || (proto->addr->length != target->length)) 555 529 return NULL; 556 } 530 557 531 addr = arp_addr_find(&proto->addresses, target->value, target->length); 558 if (addr){532 if (addr) 559 533 return addr; 560 } 534 561 535 // ARP packet content size = header + (address + translation) * 2 562 length = 8 + (CONVERT_SIZE(char, uint8_t, proto->addr->length) + CONVERT_SIZE(char, uint8_t, device->addr->length)) * 2; 563 if(length > device->packet_dimension.content){ 536 length = 8 + 2 * (CONVERT_SIZE(char, uint8_t, proto->addr->length) + 537 CONVERT_SIZE(char, uint8_t, device->addr->length)); 538 if (length > device->packet_dimension.content) 564 539 return NULL; 565 } 566 packet = packet_get_4_remote(arp_globals.net_phone, device->packet_dimension.addr_len, device->packet_dimension.prefix, length, device->packet_dimension.suffix); 567 if(! packet){ 540 541 packet = packet_get_4_remote(arp_globals.net_phone, 542 device->packet_dimension.addr_len, device->packet_dimension.prefix, 543 length, device->packet_dimension.suffix); 544 if (!packet) 568 545 return NULL; 569 } 546 570 547 header = (arp_header_ref) packet_suffix(packet, length); 571 if (! header){548 if (!header) { 572 549 pq_release_remote(arp_globals.net_phone, packet_get_id(packet)); 573 550 return NULL; 574 551 } 552 575 553 header->hardware = htons(device->hardware); 576 554 header->hardware_length = (uint8_t) device->addr->length; … … 579 557 header->operation = htons(ARPOP_REQUEST); 580 558 length = sizeof(arp_header_t); 581 memcpy(((uint8_t *) header) + length, device->addr->value, device->addr->length); 559 memcpy(((uint8_t *) header) + length, device->addr->value, 560 device->addr->length); 582 561 length += device->addr->length; 583 memcpy(((uint8_t *) header) + length, proto->addr->value, proto->addr->length); 562 memcpy(((uint8_t *) header) + length, proto->addr->value, 563 proto->addr->length); 584 564 length += proto->addr->length; 585 565 bzero(((uint8_t *) header) + length, device->addr->length); 586 566 length += device->addr->length; 587 567 memcpy(((uint8_t *) header) + length, target->value, target->length); 588 if(packet_set_addr(packet, (uint8_t *) device->addr->value, (uint8_t *) device->broadcast_addr->value, CONVERT_SIZE(char, uint8_t, device->addr->length)) != EOK){ 568 569 if (packet_set_addr(packet, (uint8_t *) device->addr->value, 570 (uint8_t *) device->broadcast_addr->value, 571 CONVERT_SIZE(char, uint8_t, device->addr->length)) != EOK) { 589 572 pq_release_remote(arp_globals.net_phone, packet_get_id(packet)); 590 573 return NULL; 591 574 } 575 592 576 nil_send_msg(device->phone, device_id, packet, SERVICE_ARP); 593 577 return NULL; 594 578 } 595 579 580 581 /** Processes the ARP message. 582 * 583 * @param[in] callid The message identifier. 584 * @param[in] call The message parameters. 585 * @param[out] answer The message answer parameters. 586 * @param[out] answer_count The last parameter for the actual answer in the 587 * answer parameter. 588 * @returns EOK on success. 589 * @returns ENOTSUP if the message is not known. 590 * 591 * @see arp_interface.h 592 * @see IS_NET_ARP_MESSAGE() 593 */ 594 int 595 arp_message_standalone(ipc_callid_t callid, ipc_call_t *call, 596 ipc_call_t *answer, int *answer_count) 597 { 598 ERROR_DECLARE; 599 600 measured_string_ref address; 601 measured_string_ref translation; 602 char *data; 603 packet_t packet; 604 packet_t next; 605 606 *answer_count = 0; 607 switch (IPC_GET_METHOD(*call)) { 608 case IPC_M_PHONE_HUNGUP: 609 return EOK; 610 611 case NET_ARP_DEVICE: 612 ERROR_PROPAGATE(measured_strings_receive(&address, &data, 1)); 613 if (ERROR_OCCURRED(arp_device_message(IPC_GET_DEVICE(call), 614 IPC_GET_SERVICE(call), ARP_GET_NETIF(call), address))) { 615 free(address); 616 free(data); 617 } 618 return ERROR_CODE; 619 620 case NET_ARP_TRANSLATE: 621 ERROR_PROPAGATE(measured_strings_receive(&address, &data, 1)); 622 fibril_rwlock_read_lock(&arp_globals.lock); 623 translation = arp_translate_message(IPC_GET_DEVICE(call), 624 IPC_GET_SERVICE(call), address); 625 free(address); 626 free(data); 627 if (!translation) { 628 fibril_rwlock_read_unlock(&arp_globals.lock); 629 return ENOENT; 630 } 631 ERROR_CODE = measured_strings_reply(translation, 1); 632 fibril_rwlock_read_unlock(&arp_globals.lock); 633 return ERROR_CODE; 634 635 case NET_ARP_CLEAR_DEVICE: 636 return arp_clear_device_req(0, IPC_GET_DEVICE(call)); 637 638 case NET_ARP_CLEAR_ADDRESS: 639 ERROR_PROPAGATE(measured_strings_receive(&address, &data, 1)); 640 arp_clear_address_req(0, IPC_GET_DEVICE(call), 641 IPC_GET_SERVICE(call), address); 642 free(address); 643 free(data); 644 return EOK; 645 646 case NET_ARP_CLEAN_CACHE: 647 return arp_clean_cache_req(0); 648 649 case NET_IL_DEVICE_STATE: 650 // do nothing - keep the cache 651 return EOK; 652 653 case NET_IL_RECEIVED: 654 if (ERROR_NONE(packet_translate_remote(arp_globals.net_phone, 655 &packet, IPC_GET_PACKET(call)))) { 656 fibril_rwlock_read_lock(&arp_globals.lock); 657 do { 658 next = pq_detach(packet); 659 ERROR_CODE = 660 arp_receive_message(IPC_GET_DEVICE(call), 661 packet); 662 if (ERROR_CODE != 1) { 663 pq_release_remote(arp_globals.net_phone, 664 packet_get_id(packet)); 665 } 666 packet = next; 667 } while (packet); 668 fibril_rwlock_read_unlock(&arp_globals.lock); 669 } 670 return ERROR_CODE; 671 672 case NET_IL_MTU_CHANGED: 673 return arp_mtu_changed_message(IPC_GET_DEVICE(call), 674 IPC_GET_MTU(call)); 675 } 676 677 return ENOTSUP; 678 } 679 596 680 /** Default thread for new connections. 597 681 * 598 * @param[in] iid The initial message identifier. 599 * @param[in] icall The initial message call structure. 600 * 601 */ 602 static void il_client_connection(ipc_callid_t iid, ipc_call_t * icall) 682 * @param[in] iid The initial message identifier. 683 * @param[in] icall The initial message call structure. 684 */ 685 static void il_client_connection(ipc_callid_t iid, ipc_call_t *icall) 603 686 { 604 687 /* … … 608 691 ipc_answer_0(iid, EOK); 609 692 610 while (true) {693 while (true) { 611 694 ipc_call_t answer; 612 695 int answer_count; … … 623 706 &answer_count); 624 707 625 /* End if said to either by the message or the processing result */ 626 if ((IPC_GET_METHOD(call) == IPC_M_PHONE_HUNGUP) || (res == EHANGUP)) 708 /* 709 * End if told to either by the message or the processing 710 * result. 711 */ 712 if ((IPC_GET_METHOD(call) == IPC_M_PHONE_HUNGUP) || 713 (res == EHANGUP)) 627 714 return; 628 715 … … 634 721 /** Starts the module. 635 722 * 636 * @param argc The count of the command line arguments. Ignored parameter. 637 * @param argv The command line parameters. Ignored parameter. 638 * 639 * @returns EOK on success. 640 * @returns Other error codes as defined for each specific module start function. 641 * 723 * @returns EOK on success. 724 * @returns Other error codes as defined for each specific module 725 * start function. 642 726 */ 643 727 int main(int argc, char *argv[]) … … 646 730 647 731 /* Start the module */ 648 if (ERROR_OCCURRED(il_module_start_standalone(il_client_connection))) 649 return ERROR_CODE; 650 732 ERROR_PROPAGATE(il_module_start_standalone(il_client_connection)); 651 733 return EOK; 652 734 } … … 654 736 /** @} 655 737 */ 738
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